Is there any other ambient temperature sensor other than AQ that is compatible with one of these products (OCTO/Farbwerk/Flow Mps/Pressure Mps)?
Yes, any 2-pin, 10 kOhm temperature sensor should work
In terms of EK Cpu and Gpu blocks, will they work if I hooked them up straight away with farbwerk without any adapters using drgb headers on farbwerk?
Not sure what you are asking.
The farbwerk 360 uses a PicoBlade system connector and the CPU/GPU blocks do not... unless you solder directly to the pins, you will need an
adapter.